I'm considering upgrading my video card, and thinking about the Sapphire HD7770 1GB, which is available for 99 euros.

My computer is a little behind, but I'm not really playing any other high end games, and I can still play WoW quite well on it, so I'm not going to invest money into a new computer at this time. Outside of 25 man raiding, the computer handles everything well. During 25 man raiding, I usually disable some addons and put some settings to low, and achieve about 15-20 FPS that way.

My question is, will I see some improvements by replacing my 2 HD4850s in Crossfire with a single HD7770, or is the rest of my system holding me back too much, and will the upgrade be close to worthless?

FPS in WoW (in particular in WoW) is dependent on the processor speed more than anything else. I do not believe that upgrading HD 4850 CF to a single HD 7770 would be a noticeable upgrade for you. If you could, however, overclock the CPU to 3-3.2 GHz you would likely see about a 20% increase in FPS, especially in 25 man raids.

This is a comparison between a single 4870 (I know you have 4850s but that's the closest they have) and a single 7770. There isn't really much to choose between the two.

If you look at a 5850 vs 7770 (probably a closer comparison to your CF setup) the difference is either negligible, or the 5850 is better.

Thanks for the update. Considering I use my computer for other stuff than WoW, and don't want to risk myself of suddenly being without a computer and having to buy a new one, I don't feel too comfortable about looking into overclocking.

Fetzie wrote:This is a comparison between a single 4870 (I know you have 4850s but that's the closest they have) and a single 7770. There isn't really much to choose between the two.

If you look at a 5850 vs 7770 (probably a closer comparison to your CF setup) the difference is either negligible, or the 5850 is better.

Though the 4850 works with DDR3, whereas the 4870 works with GDDR5. The 4850 also doesn't have modern DX support, though I have no idea of WoW utilizes it. According to the following review, the 4870 performs quite a lot better on the more modern games, and from the point of view of that old review, WoW MoP is a highly modern game.

Which basically means I can't really improve by buying a somewhat cheap new video card. It feels like a waste to spend more than 100 euros on a video card that's going to be bottlenecked by the rest of my rig.

It isn't that it'd be bottlenecked - you could run an HD 7950 and it be hardly bottlenecked by the CPU. It is simply that you won't get the processing power from a low-end graphics card to beat your older upper-tier cards

They weren't exactly upper tier when I got them back in the day, or at least, they weren't priced as such. I'm quite surprised to see how well they do on benchmarks in comparisons. I thought they were crappier than that.

Thels wrote:They weren't exactly upper tier when I got them back in the day, or at least, they weren't priced as such. I'm quite surprised to see how well they do on benchmarks in comparisons. I thought they were crappier than that.

They're good cards, and you're running two of them, which makes the pair stronger than many single cards today.

The first digit is the Generation. The second is a performance indicator, and the third is a "refined" performance indicator. This a 4850 is a 4th gen "Tier 8" card. Compare to a 7770, and you have a 7th gen "Tier 7" card. You would not expect the 7770 to win by much. Your 4850 should be compared to a 7850 if you want to really compare apples.

As a rule of thumb, the card with the highest memory bandwidth wins. Clock speed is not so important, nor is the total amount of memory. The 4850 should be around 63552 MB/sec, while the 7770 gives 72000, so you would expect a an increase in performance of around 20% in favor of the 7770. Add a second 4850, and you should have greater bandwidth than the 7770, although you don't truly get twice the bandwidth when running two cards because they have to use some of that bandwidth for synchronization).

I used to have a GTX650 (80000 MB/sec) and went to a 7850 (153600 MB/sec) and I do notice an nice increase in frames, even in WoW. That should be expected, going from a Tier 5 to a Tier 8 card.

So your 4850s (63552 MB/sec)), even though you have two, wouldn't keep up with my one 7850 (153600 MB/sec), because mine is 3 generations newer in the same Tier.

Note that you can't compare nVidia to Radeon on the numbers alone. The 7th gen tier 8 card from nVidia smokes mine by almost double the bandwidth. in fact, the GTX 780 is one of the fastest available currently.

The 4000 and 5000 series "ended" at the x850/70 tier, the 5970 was a dual-gpu card (the generation equivalent of the 4870x2 or 7990.) The 4850 is the generation equivalent of the 7950, the 4870 the generation equivalent of the 7970.

The HD series isn't quite along those lines:71xx-72xx don't actually exist to my knowledge73xx-74xx are integrated graphics in non-APU mobile chips75xx-76xx are integrated graphics in APU chips77xx and above are the dedicated graphics cards that you can actually buy.

Yeah, I could get an upgrade, but it would mean quite a money investment, on a computer that is also falling behind in other regards. I also couldn't get the full performance of the new cards, because my motherboard is behind.

A 100 euro investment would be worth it, if it would allow me to play 25 man raids a little smoother. A 200+ euro investment feels like I can better set it apart, and start gathering for a new rig in the not so distant future.

I'd save up for a proper jump to current gear, if it were up to me. I don't see any benefit in upgrading to obsolescent gear for a small performance boost.

For example, if you were to add an SSD to improve load times, none of them will run at full speed on the Socket-775 platform. That's why I upgraded from my Q8400. It seriously annoyed me to have an SSD operating at around 20% of its potential.

I went to the Socket 1150 "Haswell" platform (i5 4570) because it's likely to have a longer lifespan than the Socket-1155 platform that's already been around for a few years. Also, if my processor blows up tomorrow, I don't have to go on eBay to find a replacement - I can hop down to my local shop and buy a CPU and be back running within a day, and I can probably do that for the next 3 years or so. I saved money going with the H-series MB and non-K processor because I don't plan to overclock my system.

Koatanga wrote:For example, if you were to add an SSD to improve load times, none of them will run at full speed on the Socket-775 platform. That's why I upgraded from my Q8400. It seriously annoyed me to have an SSD operating at around 20% of its potential.

I actually did upgrade to an SSD not too long ago, and that did quite wonders. Totally not regretting that choice.

Koatanga wrote:For example, if you were to add an SSD to improve load times, none of them will run at full speed on the Socket-775 platform. That's why I upgraded from my Q8400. It seriously annoyed me to have an SSD operating at around 20% of its potential.

I actually did upgrade to an SSD not too long ago, and that did quite wonders. Totally not regretting that choice.

Ceretainly it'll be faster than traditional hard drive, but your bios simply can't deliver what it needs to really sing.

Here's a comparison of before and after my MB/CPU change, using Samsung Magician's benchmarks:

As you can see, random read was massively choked by the 775 Bios. That's not a typo; it really is 10x faster. Even sequential read is twice as fast. I really didn't want to spend the money for the MB/CPU upgrade, because it was for both my wife's machine and mine, so I searched for a 775 MB that could fully support the SSD. It simply doesn't exist.